ES2563492T3 - Process for the extraction of ammonia from a gas stream containing ammonia - Google Patents
Process for the extraction of ammonia from a gas stream containing ammonia Download PDFInfo
- Publication number
- ES2563492T3 ES2563492T3 ES05807233.1T ES05807233T ES2563492T3 ES 2563492 T3 ES2563492 T3 ES 2563492T3 ES 05807233 T ES05807233 T ES 05807233T ES 2563492 T3 ES2563492 T3 ES 2563492T3
- Authority
- ES
- Spain
- Prior art keywords
- ammonia
- electrodialysis
- gas stream
- section
- stream
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/422—Electrodialysis
- B01D61/423—Electrodialysis comprising multiple electrodialysis steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/73—After-treatment of removed components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
- B01D61/44—Ion-selective electrodialysis
- B01D61/445—Ion-selective electrodialysis with bipolar membranes; Water splitting
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
Proceso para la extracción de amoníaco de una corriente de gases que contiene amoniaco mediante el tratamiento del amoníaco en la corriente de gases que contiene amoniaco con un ácido, durante cuyo tratamiento se forma una corriente acuosa que comprende una sal de amonio, caracterizado porque la corriente acuosa que comprende la sal de amonio se trata con electrodiálisis, por medio de lo cual se recupera el ácido y se forma una corriente acuosa que comprende una sal de hidróxido de amonio.Process for the extraction of ammonia from a gas stream containing ammonia by treating ammonia in the gas stream containing ammonia with an acid, during which treatment an aqueous stream is formed comprising an ammonium salt, characterized in that the stream Aqueous comprising the ammonium salt is treated with electrodialysis, whereby the acid is recovered and an aqueous stream is formed comprising an ammonium hydroxide salt.
Description
55
1010
15fifteen
20twenty
2525
3030
3535
4040
45Four. Five
50fifty
5555
6060
6565
DESCRIPCIONDESCRIPTION
Proceso para la extraccion de amoniaco a partir de una corriente de gases que contiene amoniacoProcess for the extraction of ammonia from a gas stream containing ammonia
La invencion se dirige a un proceso para la extraccion de amoniaco de una corriente de gases que contiene amoniaco mediante el tratamiento del amoniaco en la corriente de gases que contiene amoniaco con un acido, durante cuyo tratamiento se forma una corriente acuosa que comprende una sal de amonio.The invention is directed to a process for the extraction of ammonia from a gas stream containing ammonia by treating the ammonia in the gas stream containing ammonia with an acid, during which treatment an aqueous stream is formed comprising a salt of ammonium.
El amoniaco tiene que extraerse de corrientes de gases que se descargan hacia el aire, porque este causa problemas ambientales. Las regulaciones gubernamentales con respecto a las emisiones de amoniaco llegaran a ser mas estrictas en el futuro.Ammonia has to be extracted from gas streams that are discharged into the air, because it causes environmental problems. Government regulations regarding ammonia emissions will become stricter in the future.
Un proceso para la extraccion de amoniaco de una corriente de gases que contiene amoniaco se describe, por ejemplo, en US-A-4424072.A process for the extraction of ammonia from a gas stream containing ammonia is described, for example, in US-A-4424072.
En la descripcion de esta patente se describe que el amoniaco se extrae de una corriente de gases que sale de la parte superior de una torre de granulacion en una planta de urea al poner en contacto la corriente de gases en un depurador con una solucion acida diluida no volatil por la cual el NH3 se absorbe. De acuerdo con US-A-4424072, las soluciones acidas no volatiles incluyen acidos inorganicos tales como el acido fosforico, el acido sulfurico y el acido mtrico asf como tambien los acidos organicos tales como el acido cftrico, el acido oxalico, y los acidos organicos no volatiles comparables. De acuerdo con US-A-4424072 la corriente de gases libre de amoniaco se descarga al aire. Se menciona que la corriente acuosa obtenida que comprende una sal de amonio que sale de la seccion de depuracion en la torre de granulacion puede reciclarse en el proceso de produccion de urea.In the description of this patent it is described that the ammonia is extracted from a gas stream that leaves the top of a granulation tower in a urea plant by contacting the gas stream in a scrubber with a dilute acid solution. non volatile by which NH3 is absorbed. According to US-A-4424072, non-volatile acid solutions include inorganic acids such as phosphoric acid, sulfuric acid and metric acid as well as organic acids such as citric acid, oxalic acid, and organic acids. non volatile comparable. According to US-A-4424072, the ammonia-free gas stream is discharged into the air. It is mentioned that the aqueous stream obtained comprising an ammonium salt leaving the purification section in the granulation tower can be recycled in the urea production process.
Un antecedente de referencia en la extraccion de amoniaco es GB 2 383 034. En la presente descripcion una corriente de gases que contiene amoniaco se trata con un lfquido madre intercambiador de iones o depurador para la extraccion del amoniaco. Otro metodo para la extraccion de amoniaco se describe en EP 99176. En la presente descripcion el amoniaco se somete a la formacion de sales.A reference background in the extraction of ammonia is GB 2 383 034. In the present description a stream of gases containing ammonia is treated with an ion exchange mother liquor or scrubber for the extraction of ammonia. Another method for the extraction of ammonia is described in EP 99176. In the present description the ammonia is subjected to salt formation.
El inconveniente de usar el proceso de acuerdo con US-A-4424072, en donde la corriente acuosa que comprende una sal de amonio se recicla en el proceso de produccion de urea, es que las contaminaciones por sales de amonio pueden ocurrir en el producto final, en este caso urea, cuyas contaminaciones son indeseables. Por ejemplo, las sales de amonio en la urea usualmente haran de esta urea inadecuada para la preparacion de melamina. El procesamiento independiente de estas sales de amonio (por ejemplo, como un subproducto) cuesta dinero y energfa o frecuentemente plantea un problema medioambiental.The drawback of using the process according to US-A-4424072, wherein the aqueous stream comprising an ammonium salt is recycled in the urea production process, is that contamination by ammonium salts can occur in the final product. , in this case urea, whose contamination is undesirable. For example, the ammonium salts in the urea will usually make this urea unsuitable for the preparation of melamine. The independent processing of these ammonium salts (for example, as a byproduct) costs money and energy or often poses an environmental problem.
Se ha encontrado que el inconveniente mencionado anteriormente puede eliminarse con un proceso en donde la corriente acuosa que se compone de la sal de amonio se trata con electrodialisis, por medio de lo cual el acido se recupera y se forma una corriente acuosa que comprende una sal de hidroxido de amonio.It has been found that the aforementioned drawback can be eliminated with a process where the aqueous stream that is composed of the ammonium salt is treated with electrodialysis, whereby the acid is recovered and an aqueous stream is formed comprising a salt of ammonium hydroxide.
Mediante la realizacion de la electrodialisis en la corriente acuosa que comprende la sal de amonio, el acido que se ha usado para extraer el amoniaco puede recuperarse y una corriente acuosa que comprende la sal de amonio no se recicla en la produccion de urea lo que causa contaminacion de la urea producida.By performing the electrodialysis in the aqueous stream comprising the ammonium salt, the acid that has been used to extract the ammonia can be recovered and an aqueous stream comprising the ammonium salt is not recycled in the urea production which causes Pollution of the urea produced.
De acuerdo con el proceso para la extraccion de amoniaco de una corriente de gases que contiene amoniaco de acuerdo con la invencion la corriente acuosa que comprende la sal de amonio se trata con electrodialisis.According to the process for the extraction of ammonia from a gas stream containing ammonia according to the invention, the aqueous stream comprising the ammonium salt is treated with electrodialysis.
En la presente descripcion y de aqrn en adelante la electrodialisis se define como un proceso electrolttico que comprende un anodo y un catodo, que ademas comprende al menos una membrana situada entre el anodo y el catodo. Esta membrana puede ser una membrana permeable a aniones, una membrana permeable a cationes o una combinacion de una o mas de estas membranas con al menos dos membranas bipolares. Las membranas permeables a aniones y las membranas permeables a cationes son permeables a los aniones y cationes respectivamente cuando estos iones son atrafdos por el catodo y el anodo respectivamente. Las membranas bipolares consisten en una membrana permeable a aniones y una membrana permeable a los cationes laminadas juntas. Cuando esta membrana bipolar se orienta tal que la membrana permeable a los cationes se enfrenta al catodo, el agua se divide en protones e iones hidroxilo.In the present description and hereinafter electrodialisis is defined as an electrolytic process comprising an anode and a cathode, which also comprises at least one membrane located between the anode and the cathode. This membrane may be an anion permeable membrane, a cation permeable membrane or a combination of one or more of these membranes with at least two bipolar membranes. Anion permeable membranes and cation permeable membranes are permeable to anions and cations respectively when these ions are attracted to the cathode and anode respectively. Bipolar membranes consist of an anion permeable membrane and a membrane permeable to cations laminated together. When this bipolar membrane is oriented such that the cation permeable membrane faces the cathode, the water is divided into protons and hydroxyl ions.
Durante el tratamiento de la corriente acuosa que comprende la sal de amonio, se recupera el acido usado para la conversion del amoniaco en la corriente de gases que contiene amoniaco. De esta forma, este acido puede reutilizarse para la conversion del amoniaco en la corriente de gases que contiene amoniaco. Los acidos que pueden usarse para convertir el amoniaco son, por ejemplo, los acidos organicos y los acidos inorganicos mencionados en US-A-4424072, como se describio anteriormente.During the treatment of the aqueous stream comprising the ammonium salt, the acid used for the conversion of ammonia into the gas stream containing ammonia is recovered. In this way, this acid can be reused for the conversion of ammonia into the gas stream containing ammonia. The acids that can be used to convert ammonia are, for example, organic acids and inorganic acids mentioned in US-A-4424072, as described above.
De acuerdo con la invencion durante el proceso se forma ademas una corriente acuosa que contiene hidroxido de amonio durante la electrodialisis de la corriente acuosa que comprende la sal de amonio. Despues de su formacion estaIn accordance with the invention during the process, an aqueous stream containing ammonium hydroxide is also formed during the electrodialysis of the aqueous stream comprising the ammonium salt. After your training is
55
1010
15fifteen
20twenty
2525
3030
3535
4040
45Four. Five
50fifty
5555
6060
6565
corriente acuosa que contiene hidroxido de amonio puede tratarse con calor, por medio de lo cual se forma una corriente gaseosa de amoniaco.aqueous stream containing ammonium hydroxide can be heat treated, whereby a gaseous stream of ammonia is formed.
La corriente de gases que contiene amoniaco puede originarse a partir de diversos procesos qmmicos, como los procesos de produccion de amoniaco, de urea y de melamina, pero ademas a partir de fuentes agncolas. El proceso de acuerdo con la invencion es particularmente adecuado para el tratamiento de corrientes de gases que contienen amoniaco que contienen bajas cantidades de amoniaco. Estas corrientes de gases que contienen amoniaco son diffciles de tratar de una u otra forma, por ejemplo, por separacion y condensacion, para la extraccion de amoniaco de estas corrientes de gases. Los ejemplos de corrientes de gases que contienen amoniaco que contienen bajas cantidades de amoniaco son las corrientes de gases que salen de las secciones de formacion de perlas o de granulacion de plantas de urea.The gas stream containing ammonia can originate from various chemical processes, such as the production processes of ammonia, urea and melamine, but also from agricultural sources. The process according to the invention is particularly suitable for the treatment of gas streams containing ammonia containing low amounts of ammonia. These gas streams containing ammonia are difficult to treat in one way or another, for example, by separation and condensation, for the extraction of ammonia from these gas streams. Examples of gas streams containing ammonia containing low amounts of ammonia are gas streams that come out of the pearl forming or granulating sections of urea plants.
Cuando la corriente de gases que contiene amoniaco, que se trata por el proceso de acuerdo con la invencion, se origina de los procesos de produccion de amoniaco, urea o de melamina, la corriente gaseosa de amoniaco puede reciclarse con estos procesos. Antes de reciclar la corriente gaseosa de amoniaco, la corriente gaseosa puede tratarse para concentrar el amoniaco en la corriente gaseosa.When the gas stream containing ammonia, which is treated by the process according to the invention, originates from the production processes of ammonia, urea or melamine, the gaseous stream of ammonia can be recycled with these processes. Before the ammonia gas stream is recycled, the gas stream can be treated to concentrate the ammonia in the gas stream.
La electrodialisis se lleva a cabo en una celda electroqmmica que comprende un anodo y un catodo separados por una membrana permeable a aniones o una membrana permeable a cationes. Ademas puede usarse una combinacion de una o mas de estas membranas con al menos dos membranas bipolares. Para la conversion de la sal de amonio en la corriente acuosa en una forma tal que un acido se recupera y se forma una sal de hidroxido de amonio, preferentemente el anodo y el catodo estan separados por al menos una membrana permeable a aniones. Mas preferentemente la celda electroqmmica comprende ademas membranas bipolares y una membrana permeable a los cationes.The electrodialysis is carried out in an electrochemical cell comprising an anode and a cathode separated by an anion permeable membrane or a cation permeable membrane. In addition, a combination of one or more of these membranes with at least two bipolar membranes can be used. For the conversion of the ammonium salt into the aqueous stream in such a way that an acid is recovered and an ammonium hydroxide salt is formed, preferably the anode and the cathode are separated by at least one anion-permeable membrane. More preferably, the electrochemical cell also comprises bipolar membranes and a membrane permeable to cations.
La invencion se dirige ademas a una seccion de electrodialisis para el tratamiento de una corriente de gases que contiene amoniaco que comprendeThe invention is also directed to an electrodialysis section for the treatment of a gas stream containing ammonia comprising
• un depurador, en donde una corriente de gases que contiene amoniaco se pone en contacto con un acido,• a scrubber, where a stream of gases containing ammonia comes into contact with an acid,
• un aparato de electrodialisis, en donde se generan una corriente que comprende un acido y una corriente que comprende una sal de hidroxido de amonio.• an electrodialysis apparatus, where a current comprising an acid and a current comprising an ammonium hydroxide salt are generated.
Preferentemente, la seccion de electrodialisis comprende ademas un removedor en donde la corriente que comprende una sal de hidroxido de amonio se calienta y se forma una corriente gaseosa de amoniaco.Preferably, the electrodialysis section further comprises a remover in which the stream comprising an ammonium hydroxide salt is heated and a gaseous stream of ammonia is formed.
La seccion de electrodialisis preferentemente se incorpora en una planta de urea, que comprende una seccion de formacion de perlas o una seccion de granulacion, para tratar la corriente de gases que contiene amoniaco que sale de la seccion de formacion de perlas o de granulacion.The electrodialysis section is preferably incorporated into a urea plant, which comprises a pearl formation section or a granulation section, to treat the ammonia-containing gas stream leaving the pearl or granulation formation section.
La invencion se explicara mas aun en detalle con referencia a la figura adjunta. En la figura 1 se muestra una seccion de la electrodialisis de acuerdo con la invencion.The invention will be explained further in detail with reference to the attached figure. A section of the electrodialysis according to the invention is shown in Figure 1.
Esta comprende un depurador (SC) en donde una corriente de gases que contiene amoniaco (1) se pone en contacto con una solucion de acido (3). El aire limpio se descarga desde la via del depurador (2). La solucion de acido que contiene ademas el amoniaco capturado como una sal de amonio se transporta con una bomba en parte al aparato de electrodialisis (ED) y en parte de nuevo al depurador. El aparato de electrodialisis comprende al menos una membrana situada entre un anodo y un catodo. Una corriente que comprende el acido (4) se genera en el aparato de electrodialisis (ED) y se recicla con el depurador (SC) y otra corriente que comprende una sal de hidroxido de amonio (5), se genera ademas en el aparato de electrodialisis, se alimenta al removedor (ST). En el removedor (ST) el hidroxido de amonio se convierte con la ayuda de vapor (6) en una corriente gaseosa de amoniaco (7), que comprende agua.This comprises a scrubber (SC) where a gas stream containing ammonia (1) is contacted with an acid solution (3). The clean air is discharged from the scrubber path (2). The acid solution that also contains the ammonia captured as an ammonium salt is transported with a pump partly to the electrodialysis apparatus (ED) and partly again to the scrubber. The electrodialysis apparatus comprises at least one membrane located between an anode and a cathode. A stream comprising the acid (4) is generated in the electrodialysis apparatus (ED) and recycled with the scrubber (SC) and another stream comprising an ammonium hydroxide salt (5) is also generated in the apparatus electrodialysis, is fed to the remover (ST). In the remover (ST) the ammonium hydroxide is converted with the help of steam (6) into a gaseous stream of ammonia (7), which comprises water.
Dos ejemplos de configuraciones posibles de un aparato de electrodialisis de acuerdo con la invencion se explicaran con mas detalle.Two examples of possible configurations of an electrodialysis apparatus according to the invention will be explained in more detail.
De acuerdo con la primera configuracion el aparato de electrodialisis consiste en celdas electroqmmicas que comprenden una membrana permeable a aniones situada entre un anodo y un catodo que divide la celda en un compartimiento de anodo y un compartimiento de catodo. La solucion que comprende sal de amonio se alimenta al compartimiento del catodo. En el aparato de electrodialisis el acido se forma en el compartimiento del anodo y la sal de hidroxido de amonio se forma en el compartimiento del catodo. Una solucion de acido sulfurico con un pH entre 0 y 2 puede usarse como acido. En el depurador se forma sulfato de amonio. Una parte de la solucion que sale del depurador y que contiene el sulfato de amonio se alimenta al compartimiento del catodo de la celda electroqmmica. Los iones sulfato se transfieren a traves de la membrana y despues de eso se convierten, en el compartimiento del anodo, en acido sulfurico. Los iones de amonio se convierten, en el compartimiento del catodo, en hidroxido de amonio. Parte de la solucion de acido sulfurico se recicla con el depurador y parte de la solucion de hidroxido de amonio se trata en el removedor.According to the first configuration, the electrodialysis apparatus consists of electrochemical cells comprising an anion permeable membrane located between an anode and a cathode that divides the cell into an anode compartment and a cathode compartment. The solution comprising ammonium salt is fed to the cathode compartment. In the electrodialysis apparatus the acid is formed in the anode compartment and the ammonium hydroxide salt is formed in the cathode compartment. A solution of sulfuric acid with a pH between 0 and 2 can be used as an acid. Ammonium sulfate is formed in the scrubber. A part of the solution that comes out of the scrubber and which contains the ammonium sulfate is fed to the cathode compartment of the electrochemical cell. Sulfate ions are transferred through the membrane and after that they become, in the anode compartment, sulfuric acid. Ammonium ions are converted, in the cathode compartment, into ammonium hydroxide. Part of the sulfuric acid solution is recycled with the scrubber and part of the ammonium hydroxide solution is treated in the remover.
De acuerdo con la segunda configuracion el aparato de electrodialisis consiste en celdas electroqmmicas que comprenden una membrana permeable a aniones y/o una membrana permeable a cationes y membranas bipolaresAccording to the second configuration, the electrodialysis apparatus consists of electrochemical cells comprising an anion permeable membrane and / or a cation permeable membrane and bipolar membranes.
33
situadas entre un anodo y un catodo y ordenadas de una manera conocida para un experto en la tecnica. La celda electroqmmica puede ser por ejemplo una bien llamada celda de tres compartimientos de acuerdo con la figura 2.located between an anode and a cathode and arranged in a manner known to a person skilled in the art. The electrochemical cell may, for example, be a so-called three compartment cell according to Figure 2.
La corriente de gases que contiene amoniaco se puso en contacto con una solucion de acido mtrico con un pH entre 0 y 5 2 en el depurador. Una parte de la solucion resultante que comprende nitrato de amonio se alimenta a las celdasThe gas stream containing ammonia was contacted with a metric acid solution with a pH between 0 and 5 2 in the scrubber. A part of the resulting solution comprising ammonium nitrate is fed to the cells
electroqmmicas en el aparato de electrodialisis. La celda electroqmmica se compone de una membrana permeable a aniones (A), una membrana permeable a cationes (C) y membranas bipolares (B) en una disposicion de acuerdo con la figura 2. La solucion que comprende nitrato de amonio (S) se alimento a la celda electroqmmica. El agua se dividio dentro de la membrana bipolar y se forman una solucion de acido mtrico (Y) y una solucion de hidroxido de amonio (X).electrochemicals in the electrodialysis apparatus. The electrochemical cell is composed of an anion permeable membrane (A), a cation permeable membrane (C) and bipolar membranes (B) in an arrangement according to Figure 2. The solution comprising ammonium nitrate (S) is Food to the electrochemical cell. Water was divided into the bipolar membrane and a solution of metric acid (Y) and a solution of ammonium hydroxide (X) were formed.
10 Una parte de la solucion de acido mtrico se recicla con el depurador y parte de la solucion de hidroxido de amonio se trata en el separador.10 A part of the metric acid solution is recycled with the scrubber and part of the ammonium hydroxide solution is treated in the separator.
15fifteen
Claims (12)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04078338 | 2004-12-08 | ||
| EP04078338 | 2004-12-08 | ||
| EP05075478A EP1695755A1 (en) | 2005-02-28 | 2005-02-28 | Process and system for the removal of ammonia from an ammonia containing gas stream |
| EP05075478 | 2005-02-28 | ||
| PCT/EP2005/012199 WO2006061082A1 (en) | 2004-12-08 | 2005-11-11 | Process for the removal of ammonia from an ammonia-containing gas stream |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2563492T3 true ES2563492T3 (en) | 2016-03-15 |
Family
ID=36071959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES05807233.1T Active ES2563492T3 (en) | 2004-12-08 | 2005-11-11 | Process for the extraction of ammonia from a gas stream containing ammonia |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US8808517B2 (en) |
| EP (1) | EP1819666B1 (en) |
| JP (1) | JP5101293B2 (en) |
| CN (1) | CN101072751B (en) |
| CA (1) | CA2588774C (en) |
| EA (1) | EA013218B1 (en) |
| EG (1) | EG24522A (en) |
| ES (1) | ES2563492T3 (en) |
| MX (1) | MX2007006779A (en) |
| MY (1) | MY150463A (en) |
| PL (1) | PL1819666T3 (en) |
| WO (1) | WO2006061082A1 (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8152988B2 (en) * | 2007-08-31 | 2012-04-10 | Energy & Enviromental Research Center Foundation | Electrochemical process for the preparation of nitrogen fertilizers |
| CN101284169B (en) * | 2008-05-14 | 2011-05-18 | 中国科学技术大学 | Ammonia decontamination agent and preparation method thereof |
| US20110281318A1 (en) * | 2008-11-07 | 2011-11-17 | Sandra Schreuder | Method and apparatus for treating an off-gas stream |
| US8398945B2 (en) | 2008-12-12 | 2013-03-19 | Thyssenkrupp Uhde Gmbh | Removal of ammonia nitrogen, ammonium nitrogen and urea nitrogen by oxidation with hypochlorite-containing solutions from exhaust air in plants for producing ammonia and urea |
| FR2945287B1 (en) * | 2009-05-06 | 2012-07-13 | Alcion Environnement | METHOD OF RECOVERING AND RECYCLING AMMONIA, INSTALLATION |
| EP2301917A1 (en) | 2009-09-16 | 2011-03-30 | Stamicarbon B.V. | Removal of urea and ammonia from exhaust gases |
| WO2011082977A1 (en) * | 2009-12-16 | 2011-07-14 | Basf Se | Method for recycling exhaust gases comprising nox from wastewater streams from nitrating plants |
| JP5745546B2 (en) * | 2010-02-12 | 2015-07-08 | スタミカーボン・ベー・フェー | Ammonia removal in urea finishing. |
| US8906332B2 (en) * | 2010-03-17 | 2014-12-09 | The United States Of America, As Represented By The Secretary Of Agriculture | Gaseous ammonia removal system |
| RU2472777C1 (en) * | 2011-11-23 | 2013-01-20 | Фарид Алекович Батуллин | Method of producing high-purity crystalline carbamide |
| KR102013740B1 (en) * | 2012-05-30 | 2019-10-21 | 큐바이오텍 (주) | Method of Treating Wastewater Containing Ammonia and Apparatus |
| CN102805990B (en) * | 2012-06-05 | 2014-11-12 | 四川美丰化工股份有限公司 | System for washing and recycling tail gas generated during production of urea |
| US10259919B2 (en) | 2014-09-09 | 2019-04-16 | University Of Delaware | Perchlorate ion permselective membranes |
| KR101528530B1 (en) * | 2014-09-24 | 2015-06-15 | (주) 테크윈 | Apparatus and method for industrial wastewater treatment using oxidizing agent produced from the wastewater |
| CN104355472B (en) * | 2014-10-28 | 2016-10-05 | 北京赛科康仑环保科技有限公司 | A kind of containing inorganic ammonium salt Waste Water Treatment, process technique and application thereof |
| US11027235B2 (en) | 2015-03-30 | 2021-06-08 | General Electric Technology Gmbh | Method and apparatus for reagent recovery in a flue gas processing system |
| US9573816B2 (en) | 2015-04-02 | 2017-02-21 | General Electric Technology Gmbh | System for low pressure carbon dioxide regeneration in a chilled ammonia process |
| WO2016201563A1 (en) | 2015-06-15 | 2016-12-22 | Saltworks Technologies Inc. | Process and system for removing ammonium from wastewater |
| CN105169891B (en) * | 2015-08-31 | 2017-09-01 | 四川金象赛瑞化工股份有限公司 | A kind of net ammonia process of urea tail gas |
| CN105344208A (en) * | 2015-11-23 | 2016-02-24 | 河南心连心化肥有限公司 | Urea synthetic gas absorption recirculation apparatus and recirculation method thereof |
| GB2576518B (en) * | 2018-08-21 | 2022-09-21 | Process Ltd | Systems and methods for removing ammonia from an ammonia-containing liquid |
| NL2029462B1 (en) | 2020-10-19 | 2022-06-08 | Lenntech B V | Process for acid washing of a gas comprising ammonia |
| NL2027533B1 (en) * | 2021-02-10 | 2022-09-12 | Nijhuis Water Tech B V | A system for removing ammonia from an ammonia-containing effluent, and method for the same. |
| CN113274882B (en) * | 2021-06-09 | 2022-05-17 | 温州大学新材料与产业技术研究院 | Ammonium adipate waste liquid recovery method and device based on high-temperature bipolar membrane electrodialysis |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB790510A (en) | 1955-09-01 | 1958-02-12 | Carves Simon Ltd | Improvements relating to the recovery of ammonia from gases |
| US4424072A (en) | 1982-07-01 | 1984-01-03 | Lerner Bernard J | Prilling |
| US4449900A (en) * | 1982-07-01 | 1984-05-22 | Lerner Bernard J | Prilling |
| NL1013394C2 (en) * | 1999-10-26 | 2001-05-01 | Dsm Nv | Process for the preparation of urea. |
| GB0126458D0 (en) | 2001-11-03 | 2002-01-02 | Accentus Plc | Ammonia removal |
-
2005
- 2005-11-11 CN CN2005800422394A patent/CN101072751B/en active Active
- 2005-11-11 CA CA2588774A patent/CA2588774C/en active Active
- 2005-11-11 PL PL05807233T patent/PL1819666T3/en unknown
- 2005-11-11 US US11/792,285 patent/US8808517B2/en active Active
- 2005-11-11 MX MX2007006779A patent/MX2007006779A/en active IP Right Grant
- 2005-11-11 EA EA200701240A patent/EA013218B1/en not_active IP Right Cessation
- 2005-11-11 ES ES05807233.1T patent/ES2563492T3/en active Active
- 2005-11-11 WO PCT/EP2005/012199 patent/WO2006061082A1/en active Application Filing
- 2005-11-11 EP EP05807233.1A patent/EP1819666B1/en active Active
- 2005-11-11 JP JP2007544758A patent/JP5101293B2/en active Active
- 2005-11-18 MY MYPI20055408 patent/MY150463A/en unknown
-
2007
- 2007-06-10 EG EGNA2007000563 patent/EG24522A/en active
-
2014
- 2014-03-24 US US14/223,897 patent/US9108164B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP5101293B2 (en) | 2012-12-19 |
| US8808517B2 (en) | 2014-08-19 |
| EA200701240A1 (en) | 2007-12-28 |
| CA2588774C (en) | 2014-10-28 |
| EA013218B1 (en) | 2010-04-30 |
| MX2007006779A (en) | 2007-10-23 |
| CN101072751A (en) | 2007-11-14 |
| US20140284214A1 (en) | 2014-09-25 |
| EG24522A (en) | 2009-08-19 |
| US20080128291A1 (en) | 2008-06-05 |
| CN101072751B (en) | 2010-08-25 |
| EP1819666A1 (en) | 2007-08-22 |
| WO2006061082A1 (en) | 2006-06-15 |
| CA2588774A1 (en) | 2006-06-15 |
| JP2008522798A (en) | 2008-07-03 |
| US9108164B2 (en) | 2015-08-18 |
| EP1819666B1 (en) | 2015-12-30 |
| MY150463A (en) | 2014-01-30 |
| PL1819666T3 (en) | 2016-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2563492T3 (en) | Process for the extraction of ammonia from a gas stream containing ammonia | |
| JP6303186B2 (en) | Circulation method for producing taurine | |
| EP3326974B1 (en) | Method for producing lithium hydroxide and lithium carbonate | |
| CA1065273A (en) | Removal of so2 from gases | |
| DK2234699T3 (en) | PROCEDURE FOR THE PREPARATION OF SODIUM BICARBONATE FOR Sulfurization of Flue Gas | |
| US9926265B1 (en) | Cyclic process for producing taurine | |
| RU2010124196A (en) | METHOD FOR EXTRACTION OF AMMONIA FROM GAS FLOW DURING UREA SYNTHESIS | |
| US11027235B2 (en) | Method and apparatus for reagent recovery in a flue gas processing system | |
| EP1695755A1 (en) | Process and system for the removal of ammonia from an ammonia containing gas stream | |
| CN104355472A (en) | Inorganic ammonium salt-containing wastewater treatment system, treatment process and application of wastewater treatment system | |
| US3974258A (en) | Process for purifying a sulfur dioxide containing gas | |
| TWM463735U (en) | Ammonia/nitrogen waste water treatment system | |
| CN111606335A (en) | Method for comprehensively utilizing clean potassium salt-containing mother liquor | |
| EP0967003B1 (en) | Process and system for exhaust gas treatment | |
| TW201305064A (en) | Processing method for collecting waste liquid containing fluorine and apparatus thereof | |
| CN105174551A (en) | High-concentration ammonia-nitrogen wastewater recycling technology | |
| CN107890761A (en) | A kind of method that the industrial waste gas containing ammonia is handled using membrane separation technique | |
| CN114906957A (en) | Concentrated brine recycling treatment method and treatment system | |
| CN103435214A (en) | Comprehensive treatment method for formaldehyde-containing acid wastewater | |
| CN109851107A (en) | A method of Nacl effluent resource will be mixed using membrane technology | |
| TWI757641B (en) | Semiconductor grade ammonia water and sulfuric acid recycling and manufacturing method | |
| US20240092732A1 (en) | Process for producing taurine | |
| CN104445324A (en) | Preparation method of aluminum hydroxide | |
| CN111977863A (en) | Method for classified collection and recycling of acid-base waste liquid generated by regeneration of fine-processed resin | |
| CN112723320A (en) | Method and device for recovering sulfuric acid by electroheat dialysis |